Ta có: 2a = 3b = 4c
\(\Rightarrow\frac{2a}{12}=\frac{3b}{12}=\frac{4c}{12}\) \(\Rightarrow\frac{a}{6}=\frac{b}{4}=\frac{c}{3}\)
\(\Rightarrow\frac{a}{6}=\frac{b}{4}=\frac{c}{3}=\frac{a+b+c}{6+4+3}=\frac{26}{13}=2\)
\(\Rightarrow a=6.2=12;b=2.4=8;c=2.3=6\)